Which OS are you using? (I assume Windows, if not let me know.)
Trying to keep it as simple as possible:
- Reddit upgraded it’s staking mechanism, this caused the creation of a new chain.
- Reddcoin Core v1 + v2 = old chain.
- Reddcoin Core v3 = new chain.
- You need to be on the new chain to make successful transactions.
- Your blockchain files are still on the old chain, that’s why it’s not working yet.
Solution: delete existing blockchain data and resync again.
Follow these steps: Sent coins do not arrive Instructions are for Windows.
Let me know if that fixes your issue? If not, I can help you via TeamViewer.